The battery seal is an important part of the battery, which refers to the safety device used to seal the battery to prevent electrolyte loss. The cost of raw materials for battery seals is relatively high, including fluorine rubber, silicone, hydrogenated nitrile rubber and so on.
Sealing rubber material selection:
FKM: Fluorine rubber has good oil resistance, chemical corrosion resistance and high temperature resistance, suitable for sealing parts of cooling system.
HNBR: HNBR has good oil resistance and chemical resistance, suitable for cooling system seals in high temperature and high pressure environments.
Silicone rubber(VMQ) : Silicone rubber has good stability in high temperature environments and is suitable for connector seals.
Fluorine silicone rubber (FVMQ) : fluorine silicone rubber combines the advantages of fluorine rubber and silicone rubber, has good chemical corrosion resistance and high temperature resistance, suitable for connector seals.
Polytetrafluoroethylene (PTFE) : PTFE is often used as a seal for battery packs because of its excellent chemical stability and high temperature resistance. Its low coefficient of friction and high lubricity make it an ideal sealing material.
Perfluorinated rubber (FFKM) : Perfluorinated rubber has extreme chemical corrosion resistance, can maintain stable performance in high temperatures and complex chemical environments, and is suitable for battery pack sealing in extreme environments.
The application of seals in the power battery system of new energy vehicles is crucial, which directly affects the safety and performance of the battery system. By choosing the right materials and designing a reasonable sealing structure, the intrusion of moisture, dust, harmful gases and coolants can be effectively prevented to ensure the stable operation of the battery system under various environmental conditions. With the continuous development of new energy vehicle technology, innovation in sealing materials and technology will become a key factor in improving the performance and safety of battery systems.
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